Simulation of hybrid ground-coupled heat pump with domestic hot water heating systems using HVACSIM+

Ping Cui, Hongxing Yang, Jeffrey D. Spitler, Zhaohong Fang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

52 Citations (Scopus)


A hybrid ground-coupled heat pump (HGCHP) with domestic hot water (DHW) supply system has been proposed in this paper for space cooling/heating and DHW supply for residential buildings in hot-climate areas. A simulation model for this hybrid system is established within the HVACSIM+ environment. A sample system, applied for a small residential apartment located in Hong Kong, is hourly simulated in a typical meteorological year. The conventional GCHP system and an electric heater for DHW supply are also modeled and simulated on an hourly basis within the HVACSIM+ for comparison purpose. The results obtained from this case study show that the HGCHP system can effectively alleviate the imbalanced loads of the ground heat exchanger (GHE) and can offer almost 95% DHW demand. The energy saving for DHW heating is about 70% compared with an electric heater. This proposed scheme, i.e. the HGCHP with DHW supply, is suitable to residential buildings in hot-climate areas, such as in Hong Kong.
Original languageEnglish
Pages (from-to)1731-1736
Number of pages6
JournalEnergy and Buildings
Issue number9
Publication statusPublished - 2 Jun 2008


  • Domestic hot water
  • Ground heat exchanger
  • Hybrid ground-coupled heat pump
  • Thermal storage water tank

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Mechanical Engineering
  • Electrical and Electronic Engineering


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